Lock



H. D. WETHLING.

* APPLICATION ISIJULY 9,1919. 1,364,665, Patented Jan.v 4, 1921.l

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PATENT OFFICE.

HARRY D. WETHLING, OF ORANGE, NEW JERSEY.

LOCK.

Application filed July 9, 1919.

T 0 all euh-0m t may concern:

Be it known that I, HARRY D. YVVE'LHLING, a citizen of the United States, and a resident of Grange, in the county of Essex and State of New Jersey, have invented a new and Improved Lock, of which the following is a full, clear, and exact description.

This invention relates t0 a permutation lock, and has as an object to prevent the reading of the same when in open position by a person unauthorized to tamper with such lock and who might open the same for his own personal benefit subsequently.

It is a well-known fact that quite a number of thefts, in connection with the opening of permutation locks, have occurred by means of' a person, who did not know the combination of the same, reading at different intervals the various numerals to which the dial of such lock was turned, and, subsequently, rotating the dial in a similar manner, whereby to open the same.

lVhile my invention is applicable to any device utilizing a permutation lock, the same is shown in connection with a valve lock.

@ne drawback exists in connection with a valve lock utilizing a permutation system, in that while the fluid is flowing through the pipe line, any unauthorized person may glance at the various dials controlling the movement of the valves and instantly read the proper combination of the successive valves to permit an uninterrupted flow of fluid through the lock.

I have now constructed a lock of the permutation type wherein it would be possible to actuate the lock so as to open the same and yet leave the dial in such a position that it is impossible for any one to subsequently open such lock.

Reference is had to the accompanying drawings,l which illustrate one practical embodiment of my invention, and in which- Figure l is a plan view of a pipe lock embodying my invention;

Fig. 2 is a sectional view taken along line 2 2 of Fig. l; and

Fig. 3 is a section taken along line 3 3 of F ig. 2.

In these various views like reference numerals designate similar parts, and the reference. numeral l indicates the body of the lock, through which body there extends a Specification of Letters Patent.

Patented Jan. 4, 1921.

Serial No. 309,536.

passage 2 adapted to permit the flow of fluid through'the same.

Openings bisecting such passage extend through the body of the lock l and have mounted wit-hin them ordinary rotatable taper valves 3 provided with openings 4 adapted to permit the flow of fluid therethrough. The body of the valve 3 has its uppermost edge provided with a flange, so as to form a plate 5, centrally from which there extends upwardly a stem 6 which is headed so as to effectively retain in applied position a dial 7, which may be provided with finger-actuating rods 8.

The dial 7 is rotatable around the stem 6, and the underside of such dial is preferably provided with a depending annular flange 9 provided at one point in the circumference with a downwardly projecting lug 10. The upper surface of the plate 5 is formed plain, with the exception of a lug` 1l which extends upwardly and intersects the path of travel of the lug 10.

In operation it will now be appreciated that, assuming that it is desired to open any or all of the valves, the proper combination being known, the dials 7 may be rotated by means of the finger-rods 8 until it is felt that the lugs 10 and ll are in engagement one with the other. The dial is then rotated until the proper numbericorresponds with the marking line upon the body of the lock, at which time it is known that the valve is open, and the dial may be given a slight turn to the rear so that it will be impossible for any one unauthorized to inspect such lock to tell which numeral coincides with the opening of the lock or the valve controlled thereby.

As aforestated, while I have disclosed my invention as applied to a valve lock, I wish it understood that myvinvention may prove extremely valuable as applied, for instance, to safes, etc.

Further, any number of modifications in construction may well be resorted to without in the least departing invention.

Having thus described my invention, I desire to claim:

1. A lock, including a valve, a plate secured to such valve, a dial mounted upon and rotatable with respect to such plate, such dial being formed with a downwardlyprojecting lug, said plate being formed from the scope of my with an upwardly-projecting lug which intersects the path ol travel of such rstnamed lug.

2. A lock, including a valve, a plate associated With such valve, a stem projecting upwardly from such plate, a dial rotatably secured to such stem and positioned above said plate, an upwardly extending lug associated with the upper-face of such plate and a downwardly projecting lug` associated with the under-face of the dial and adapted to Abe capable of engaging the lug associated With the plate.

3. In mechanism of the class described, a series of control devices which have to be in a required predetermined position to eect starting of mechanism controlled, and an indicating* disk` on each control device, understandable only by an initiated operator to indicate when the particular control device is in the required starting position, and a lost motion connection between each disk and its control mechanism permitting movement of the indicatingdisk to temporarily conceal its required starting position.

HARRY D. VVETHLNG. 

